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Transmission-line resonator, high-frequency filter using it, high-frequency module and radio equipment

一种传输线型、谐振器的技术，应用在谐振器、波导型器件、电气元件等方向

Inactive Publication Date: 2009-08-19
PANASONIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the high-frequency filter 1 of the prior art described above, since the transmission line resonators 4 and 5 are right-handed systems, the high-frequency current flowing into the transmission line resonators 4 and 5 has an effect on the resistance of the transmission line resonators 4 and 5. Under the condition, it is converted into thermal energy, and in the transmission characteristics of the high frequency filter 1, a large insertion loss occurs

Method used

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  • Transmission-line resonator, high-frequency filter using it, high-frequency module and radio equipment
  • Transmission-line resonator, high-frequency filter using it, high-frequency module and radio equipment
  • Transmission-line resonator, high-frequency filter using it, high-frequency module and radio equipment

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Experimental program
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Effect test

no. 1 Embodiment approach

Next, a transmission line type resonator according to a first embodiment of the present invention will be described with reference to the drawings.

[0013]

figure 1 It is an outline view showing the transmission line resonator in the first embodiment.

[0014]

exist figure 1 Among them, the transmission line resonator 7 has a laminated body 8 , an external connection terminal 9 and a ground electrode 10 arranged on the end surface of the laminated body 8 .

[0015]

figure 2 It is an exploded perspective view showing the transmission line type resonator of the composite right-hand system and left-hand system in the first embodiment. After stacking multiple layers of dielectric sheets 11 made of ceramics or resins fired simultaneously at low temperature, the transmission line resonator 7 of the composite right-handed system and left-handed system is formed. Further, on a certain dielectric sheet 11, a plurality of line electrodes 12 are arranged linearly with an arb...

no. 2 Embodiment approach

Next, the configuration of the transmission line type resonator of the composite right-hand system and left-hand system in the second embodiment of the present invention will be described. In addition, unless otherwise mentioned, the structure and operation of the transmission line type resonators given the same symbols as those of the first embodiment are the same, and thus will not be described again. Figure 9 Shown is an exploded perspective view of the transmission line resonator of the composite right-hand system and left-hand system in the second embodiment. Figure 10 It is a figure which shows the cross-sectional view in 10-10.

[0035]

In the second embodiment, instead of arranging the capacitive electrode 14 , the line electrode 12 is arranged with positions differently shifted from each other over two layers. In this way, capacitive coupling can be performed between the opposing line electrodes 12 .

[0036]

With this configuration, further miniaturization of ...

no. 3 Embodiment approach

Next, the structure of the transmission line type resonator of the composite right-hand system and left-hand system in the third embodiment of the present invention will be described. In addition, unless otherwise mentioned, the structure and operation of the transmission line type resonators given the same symbols as those of the first embodiment are the same, and thus will not be described again. Figure 11 It is an exploded perspective view of the transmission line type resonator 7 of the composite right-hand system and left-hand system in the third embodiment. Figure 12 It is a figure which shows the sectional view in 12-12.

[0038]

Here, instead of the connection pattern electrode 13 , the line electrode 12 is grounded by the shield pattern electrode 17 via the via hole electrode 18 . via hole electrode 18, as a shunt inductor L L action. In addition, the ground pattern electrode 16 may not be present. In this way, the lateral width of the transmission line resonat...

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Abstract

A transmission line type resonator having a low-loss characteristic. In order to realize the low-loss characteristic, the transmission line type resonator in the present invention includes a laminate body formed of a plurality of dielectric sheets, a transmission line of complex right hand left hand system disposed between the plurality of dielectric sheets, and an external connection terminal disposed at the end face of the transmission line type resonator and connected with the transmission line of complex right hand left hand system.

Description

technical field [0001] The present invention relates to a high-frequency filter and a transmission line type resonator used in wireless devices such as mobile phones and digital TV tuners, and high-frequency modules. Background technique [0002] Next, an example of a conventional high-frequency filter using a transmission line type resonator will be described with reference to the drawings. Figure 24 It is a perspective view showing the appearance of a conventional high-frequency filter using a transmission line type resonator. [0003] exist Figure 24 Among them, a conventional high-frequency filter 1 includes an external connection terminal 3 , a half-wavelength transmission line resonator 4 , a half-wavelength transmission line resonator 5 , and an external connection terminal 6 sequentially arranged on a dielectric sheet 2 . In addition, these external connection terminal 3 , half-wavelength transmission line resonator 4 , half-wavelength transmission line reson...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01P1/203H01P7/08
CPCH01P7/084H01P1/203
Inventor 石崎俊雄田村昌也
Owner PANASONIC CORP
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